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Finding the Fourth Proportional to 281,289.84, 388,180.40 and 153,973.48

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Solution

The fourth proportional to 281,289.84, 388,180.40 and 153,973.48 is: 212,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,289.84 : 388,180.40 = 153,973.48 : x
  2. Step 2: Convert to fraction form
    281,289.84/388,180.40 = 153,973.48/x
  3. Step 3: Cross multiply
    281,289.84x = 388,180.40 × 153,973.48
  4. Step 4: Simplify right side
    281,289.84x = 59,769,487,055.79
  5. Step 5: Solve for x
    x = 59,769,487,055.79/281,289.84
  6. Step 6: Final answer
    x = 212,483.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.